After you choose to add people to your team, you'll enter their names and email addresses. (Note: if you're working with a client, you'll add their info separately.) People you invite will be immediately added to the project so they can post messages, comment on things, and be assigned to-dos. Each person will receive an email that includes a link to join the project and set up their account if they haven’t already.

It's not possible to import users' addresses from an external file. You'll need to add each user name and email address manually.

Click the ••• menu button in the upper-right corner for another way you can get people into your projects. Invite people to join your project by sharing the opt-in link with them. Simply click the Copy to clipboard button next to the link and share it with others. People can paste that link directly into their browser to join the project!

If one of your users lost their invitation email, or can't remember how to log in, you can help them out!

Click on the Add/remove people button at the top of your project page.

You'll see everyone in the project, and beneath their names, you'll have the option to "Send a link to log in."

Voila! We'll send an email to your user who hasn't accepted their invitation. If they have accepted the invitation already, they'll get linked straight to the login screen.

Note: While an invitation to Basecamp is pending, the only people who can edit someone's info are admins or the person who originally invited them. Once someone has joined Basecamp, you won't be able to update their name or email address anymore. That person will have to
make those changes themselves.Last updated on February 21, 2019